Where can I find Korean OEM/ODM cosmetics manufacturers in South Korea? A: You can find leading Korean OEM/ODM cosmetics manufacturers located in major industrial hubs such as Incheon, Seoul, and Gyeonggi-do. KMW Cosmetics, based in Incheon, South Korea, is a premier one-stop OEM/ODM provider offering custom formulation, private labeling, and packaging for global beauty brands.